@ds-gn/ui 0.6.0

Add two Public Beta components for long-form content.

• dsgn-callout (@ds-gn/ui/callout) sets a note, tip, warning, or danger passage apart with a tone colour and icon, an optional title slot, and an <aside role="note"> landmark.
• dsgn-code-snippet (@ds-gn/ui/code-snippet) frames a slotted, optionally pre-highlighted <pre> with an optional filename and language header and a copy button. The button renders only when copy-label is set, announces copied-label through a live region, and fires dsgn-copy (onDsgnCopy in React).

Both ship with generated React wrappers (Callout, CodeSnippet).